Answer:
-168
Step-by-step explanation:
because f(x) = 8 - 10xg(x) = 5x + 4
(fg)(x) = (8 - 10x)(5x + 4)(fg)(x) = 40x + 32 - 50x^2 - 40x(fg)(x) = 32 - 50x^2
(fg)(-2) = 32 - 50(-2)^2(fg)(-2) = 32 - 200(fg)(-2) = -168
Colin is painting figurines. He spends 20 minutes painting each figurine. After painting for 60 minutes, he still has 9 more figurines left to paint. The number fff of figurines left to paint is a function of ttt, the amount of time in minutes Colin spends painting.
Answer:
[tex]f(t) =-\frac{1}{20} t + 12[/tex]
Step-by-step explanation:
Given
[tex]t \to time[/tex]
[tex]f \to figurines[/tex]
Required
Determine the function
From the question, we have:
[tex]60\ minutes \to 9\ left[/tex]
This is represented as:
[tex]f(60) = 9[/tex] or [tex](60,9)[/tex]
If he spends 20 minutes on 1 figurine;
[tex]20\ minutes = 1\ figurine[/tex]
Multiply both sides by 3
[tex]60\ minutes = 3\ figurines[/tex]
This means that, he spends 60 minutes on 3
plus he still has 9 left
So, the initial figurines is:
[tex]f(0) =3 + 9[/tex]
[tex]f(0) =12[/tex] or [tex](0,12)[/tex]
So, we have:
[tex](60,9)[/tex] and [tex](0,12)[/tex]
Calculate the slope (m)
[tex]m = \frac{y_2 -y_1}{x_2 - x_1}[/tex]
[tex]m = \frac{12- 9}{0 -60}[/tex]
[tex]m = \frac{3}{ -60}[/tex]
[tex]m = -\frac{1}{20}[/tex]
The equation is then calculated as;
[tex]f(t) = m * t + c[/tex]
[tex]f(t) = -\frac{1}{20} * t + c[/tex]
[tex]f(t) = -\frac{1}{20}t + c[/tex]
To solve for c, we have:
[tex]f(60) = 9[/tex]
So, we have:
[tex]9 = -\frac{1}{20} * 60 + c[/tex]
[tex]9 = -3 + c[/tex]
Add 3 toboth sides
[tex]c =12[/tex]
Hence, the equation is:
[tex]f(t) =-\frac{1}{20} t + c[/tex]
[tex]f(t) =-\frac{1}{20} t + 12[/tex]
Answer:
f=-1/20t+12
Step-by-step explanation:
khan
Q5. A surprise Mathematics test was conducted in a class of 12 students. The
results are shown below.
45
22 12
9 6 63
63 78
12
69 81 3 19
4 points
Calculate the mean score
O 34.92
O 457
O 20.5
O 22
Answer:
Mean value of score = 40.167 (Approx.)
Step-by-step explanation:
Given:
Number of students in class = 12
Numbers;
45 , 22, 12, 96, 63, 63, 78 , 12 , 69, 81, 3, 19
Find:
Mean value of score
Computation:
Mean = Sum of all observation / Number of students
Mean value of score = [45 + 22 + 12 + 96 + 63 + 63 + 78 + 12 + 69 + 81 + 3 + 19] / 12
Mean value of score = [482] / 12
Mean value of score = 40.167 (Approx.)
please help im very confused
Emma is building a scale model of a jet airplane. The real airplane has a wingspan of 200 feet and a length of 240 feet.
If Emma’s model has a wingspan of 30 centimeters (cm), what is the length of the model?
Answer:
it should be either a or b
Which graph represents the function p(x) = |x - 1|?
Step-by-step explanation:
Fourth graph represent the function p(x) = |x – 1|
Answer:
B
Step-by-step explanation:
Just did the unit test
Edwin is an insurance broker. Yesterday, he sold the Fredericks family a $425,000 insurance policy. And he also sold the Guthrie family a $379,000 insurance policy. If Edwin gets a 2.35% commission for all his sales. How much commission did he get paid for these two policies he sold?
Answer:
425000×0.0235=9987.5
379000×0.0235=8906.5
9987.5+8906.5=18894 that is the amount he gonna get
A computer store bought a program at a cost of $10 and sold it at a selling price of $13. Find the percent markup.
What is the inverse of the function f(x) = 169x2 when x > 0?
Answer:
y = (√x)/13 for x > 0
Step-by-step explanation:
Actually, this is f(x) = 169x^2; the " ^ " indicates exponentiation. The graph consists of the right-hand half of the parabola 169x^2. Before we attempt to find the inverse function, we determine whether or not this function passes the vertical line test. If x is restricted to (0, infinity), a horizontal line intersects this graph only once. Therefore, this function has an inverse.
1. Replace 'f(x)' with 'y:' y = 169x^2
2. Interchange x and y: x = 169y^2
3. Solve for y: y^2 = x/169, or y = (√x)/13 for x > 0
I will give u brainliest and 5 star and thanks if its correct
Answer:
A
Step-by-step explanation:
bcz 7 times 7 times 7 3 times
Answer:
A)
Step-by-step explanation:
The expression would be 7x7x7 because exponents work that way in steps of using multiplication. It an expression used to say "3 times more" that the real amount. 7³ = to the the expression of 7x 7 x 7.
Note:
Hope this helps!
-kiniwih426
Which statement about correlation and causation is true?
1. Correlation cannot occur without causation.
2. Correlation and causation are always unrelated.
3. Causation implies correlation.
4. Correlation implies causation.
Answer:
it is number 1
Step-by-step explanation:
i asked my teacher
Answer: 3 or 4, this question isnt exactly possible to answer
Step-by-step explanation:
Which of the following sets of numbers could not represent the three sides of a right triangle?
A) {15,20,25}
B) {30,40,50}
C) {33,44,55}
D) {5,12,14}
Answer:
D
Step-by-step explanation:
A^2+B^2=C^2
For A, 15^2(225)+20^2(200)=625, and 25^2=625
For B, 30^2(900)+40^2(1,600)=2,500, and 50^2=2,500
For C, 33^2(1,089)+44^2(1,936)=3,025, and 55^=3,025
But for D, 5^2(25)+12^2(144)=169, and 14^2=196, and 169 and 196 are not equal.
Math question......please get the correct answer
Answer:
7 pies
Step-by-step explanation:
The graph is counting by 2s and the question is asking how many pies have 90 or more cherries in the pie so, I counted and got 7. 4 from 90-119 and 3 from 120-149. On 120-140 the graph fills up to 2 and then fills a half which counts as one pie 4+2+1=7 pies.
Answer:
7 pies
Step-by-step explanation:
There are 271 songs on Amy's computer. She
wants to make playlists that have 9 songs
each. How many full playlists can she make?
Answer:
30
Step-by-step explanation:
You do 271 ÷9
= 30.11111111
The answer is your whole number (30)
25+ POINTS WILL MARK BRAINLIEST
Answer:
Point A = (-6,0)
Point B = (0,4)
Answer:
Your Answer is this
Step-by-step explanation:
Which statement accurately describes the difference between short-term and long-term capital gains in terms of taxes? A. Long-term capital gains are from investments that have been held for more than one year and are taxed at a lower rate than short-term capital gains. B. Long-term capital gains are from investments that have been held for at least six months and are taxed at a lower rate than short-term capital gains. C. Long-term capital gains are from investments that have been held for more than one year and are taxed at a higher rate than short-term capital gains. D. Long-term capital gains are from investments that have been held for at least six months and are taxed at a higher rate than short-term capital gains.
Answer: A. Long-term capital gains are from investments that have been held for more than one year and are taxed at a lower rate than short-term capital gains.
Step-by-step explanation:
Long-term capital gains are indeed from investments that have been held for more than a year as opposed to short term gains from investments of less than a year. This means that long term gains can come from investments such as stocks and bonds.
Long-term capital gains are taxed at a lower rate than short term gains with most long term gains being taxed at 15% or lower. This is in contrast to short-term gains that are taxed at the same rate as ordinary income which means it could go up to as high as 37%.
Answer: A
Step-by-step explanation:
Please help me with this geometry question
Answer:
2) 40
Step-by-step explanation:
the perimeter of Rhombus =
4 × (√(12/2)²+(16/2)² )
= 4× (√6²+8²)
= 4× (√100)
= 4×10
= 40
Q) 4 × (√(12/2)²+(16/2)² )
→ 4 × (√6²+8²)
→ 4 × (√100)
→ 4 × 10
→ 40 is the perimeter of rhombus.
Evaluate the piece-defined function for the given of x by matching the domain values with the range values
Answer:
The correct answer is:
(1) d
(2) b
(3) a
(4) c
(5) e
Step-by-step explanation:
The given problem is incomplete. Find the attachment of the full question.
According to the question,
(1)
By putting x = -2, we get
[tex]f(x)=(-2)^3-5[/tex]
[tex]=-8-5[/tex]
[tex]=-13[/tex]
(2)
By putting x = 0, we get
[tex]f(x)=(0)^3-5[/tex]
[tex]=0-5[/tex]
[tex]=-5[/tex]
(3)
By putting x = 3, we get
[tex]f(x)=8[/tex]
(4)
By putting x = 9, we get
[tex]f(x)=(2)^{9-7}[/tex]
[tex]=(2)^2[/tex]
[tex]=4[/tex]
(5)
By putting x = 11, we get
[tex]f(x)=(2)^{11-7}[/tex]
[tex]=(2)^4[/tex]
[tex]=16[/tex]
5
4.)What function rule models the values in the table?
Х
4
8
12
16
Y
4.
8
12
16
20
a.) Y = -x + 4
b.)Y = x + 4
c.) Y = 4x + 4
Answer: 8
Step-by-step explanation: 4x4=0
Naomi requires 2.75 pounds of cream cheese for a cake. She has 4 ounces of cream cheese. Cream cheese is available in the store in blocks. Each block is 8 ounces. What is the minimum number of blocks of cream cheese Naomi has to buy? (1 point) 3 4 5 6
Answer:
5
Step-by-step explanation:
1 pound = 16 ounces
total ounces needed = 2.75 x 16 = 44 pounds
Ounces of cake she needs = 44 - 4 = 40
Minimum blocks needed = ounces needed / ounces of each block
40 / 8 = 5
What is the equation of the line
find the area of this parallelogram. HELP ASAP!
Answer:
260cm^2
Step-by-step explanation:
Given,
Base = 20cm
Height = 13cm
Area of a parallelogram = Base * Height
= 20 * 13
= 260cm^2
Answer:
260
Step-by-step explanation:
Area of parallelogram = base length times height
Given height = 13cm
Given base Length = 20
Area = 20 * 13 = 260
evaluate 999^3 by using suitable identity
The answer is:
999^3 = 997002999
Help please!!! I don’t understand
can someone help please..
Answer:
b
Step-by-step explanation:
What is the solution to the system of equations ?
Y=2/3 x + 3
X= -2
Answer:
5/3
Step-by-step explanation:
Answer:
x = -2, y = 5/3
Step-by-step explanation:
y = [tex]\frac{2}{3} x+3[/tex] x = -2
[tex]y=\frac{2}{3} (-2)+3[/tex]
[tex]-\frac{4}{3}[/tex] + 3 =
[tex]-1\frac{1}{3}[/tex] + 3 = [tex]\frac{5}{3}[/tex]
Mickey planted a 34" tree that grows 7.5" every year. How tall will the tree be in 5 years
Answer:
71.5"
Step-by-step explanation:
7.5x5=37.5
37.5+34=71.5"
Answer:
71.5
Step-by-step explanation:
make a formula7.5y+347.5x5=37.537.5+34=71.5PLEASE HELP ME I AM SUFFERING GREATLY
Answer:
6 hours ( i think)
Step-by-step explanation:
new crew = 12 hours, experienced crew = 6 hours
new crew + experienced crew = 12 hours and 6 hours
the help that they get together ; 12-6
Please answer it i need this
Answer: The first choice
Step-by-step explanation:
what will I get for the answer 12(2x2−8)+13(6x2−3)
Answer:
102x^2 - 135
Step-by-step explanation:
Here we must follow order of operations rules:
1. Anything enclosed inside parentheses must be done first
2. Multiplication before addition/subtraction
Thus, 12(2x^2−8)+13(6x^2−3) becomes (after multiplication):
24x^2 - 96 + 78x^2 - 39
The next step is to combine like terms:
102x^2 - 135
This cannot be simplified further. 102 and 135 have no common factors.
Thus, 12(2x^2−8)+13(6x^2−3) = 102x^2 - 135
Answer:
3x^2-5
Step-by-step explanation:
i found out myself after searching the question
if two line segments have the same lengh, which of the following must be true
A. they are congruent
B. they share an endpiont
C. They are equal
D. They form a right angel
A. They are congruent
Hope this helps! :)